Improvement in locks for can-covers



HENRY'wfS-HPARD.

Lock for Can; Covers.

qNo, 125,623, Y Patented April9,172.

D a l my 1' i -O o HENRY W. SHEPARD,

PATENT OEErcE.

0E NEw YORK, N. Y.

IMPROVEMENT IN LOCKS FQRCAN-COVERS.

Specification forming part of Letters Patent No. 125,623, dated April 9,1872.

To all whom it may concern:

Beit known that I, HENRY W. SHEPAED, of the city, county, and State ofNew York, have invented certain new and useful Improvements in LockingDevices for Metallic Can- Govers, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawing and to the letters of reference marked thereon making part ofthis specification, in which- Figure l is a side view, part lof thecover being broken away. Fig. 2 is a bottom-plan view. Fig. 3 is a sideview ofthe lug and the inclined shoulders.

My present improvement in locking devices for securing the covers ofmilk-cans and other sheet-metal vessels, in connection with which aremovable cover or top is used, consists in securing ou the neck of thecan or body of the vessel a stationary lock, arranged in such relativeposition to inclined bearing-shoulders, which are also attached to theneck of the can or body of the vessel, that, when the bolt of the lockis thrown out, it shall be on aline parallel with the vertical head orflange, in which the shoulders terminate.

The great advantage of this arrangement is found in its simplicity andthe entire effectiveness ofthe fastening it affords; and in the factthat the lock, being permanently attached to the neck, it is always inposition to be used, as all possibility of its being mislaid or lost, asis frequently the case with all other lookin g devices of thischaracter, is securely guarded against.

The construction and operation of my invention are as follows:

A is the neckof the can or body of a vessel, and B the cover, which mayeach be constructed of any suitable material and of any desired form. CC are two inclined or tapering shoulders, and may be cast or otherwiseformed with an annular rim or hoop, C or they may be independent pieces.In either case they are to be permanently attached to the neck at pointsdiametrically opposite. D D are two lugs, and are permanently riveted toor otherwise secured on the inner surface of the dome or top plate ofthe cover. These lugs Aare also arranged diametrically opposite, so thatwhen the top is placed in position and so turned as to cause the lugs'to overlap the shoulders, with their hooked heads d d impingin gagainst the inclined surfaces of the same, they shall, as they travel,at all times pass over corresponding sections of the inclined shouldersuntil each reaches the projecting heads or flanges c c, in which theshoulders terminate, and which arrest all further movement of the lugsin that direction. E is an ordinary lock, and is permanently secured tothe exterior surface of neck, and at such relative position to one ofthe shoulders G that, when its bolt c is thrown out, it shall protrudeon a line directly parallel with the head c of the shoulder, onlyleaving a space between the head or flange c and the bolt c, for thereception and retention of the lug D, as clearly shown in Fig. l.

From the foregoing detailed description the operation of my improvedfastening will be readily understood.

The cover is placed 1n position, and turned until the lugs D` D overlapthe shoulders C G and until their hooked ends d d butt against the headsc c of the shoulders. This movement so forces down the cover as tosecure a close joint or connection with the neck or cylinder. The key isthen applied and the device locked, and which forces the bolt out on theside ofthe lug, securely fastening the same between the head c of theshoulder and the bolt c.

Instead of a single lock two may be used, so arranged as to fasten theopposite lugs.

What I claim as new, and desire to secure by Letters Pate-nt of theUnited States, is

The inclined shoulders C C, lugs D D, and stationary lock E, when thesame are so combined and arranged as to operate substantially asdescribed.

In testimonywhereof I have signed my name GEO. B. PATTERSON, JOHN B.Bamm.

